"If they're (dogs) around a dog who's in the contagious period, which is usually the first two to five days of the infection, they can definitely contract it," Dr. Bloss says.

Dr. Bloss says the dog flu is a respiratory virus with no vaccine. Although it's rarely fatal, she says your dog can still get very sick. All it takes is a sneeze from one dog, and a sniff from another to contract it.

The dog flu can be very dangerous, and potentially fatal if not treated with antibiotics. If you notice your dog is coughing, not eating, or just not feeling well, you should go to vet for a check-up.